Follow us: @MailOnline on Twitter | DailyMail on FacebookMore than a quarter of a century has passed since Patty Hearst's infamous ordeal when she was taken hostage by radical leftist soldiers, only to switch sides within weeks.

More than a quarter of a century has passed since Patty Hearst's infamous ordeal when she was taken hostage by radical leftist soldiers.

Now, the 58-year-old publishing heiress is going to experience a different kind of mania when she becomes a grandmother for the first time.

Her eldest daughter, Gillian Hearst-Simonds, 31, is expecting her first child according to The New York Post.

Nana Pat: Patty Hearst, 58 (right) is going to become a grandmother for the first time – her daughter, Gillian Hearst-Simonds, 31 (left), is expecting her first child

Patty, who is also mother to model Lydia Hearst, 27, is apparently telling friends she is both 'thrilled' and 'horrified' at the prospect of being a grandmother.

Gillian, married to lawyer Christian Simonds whose clients include Jersey Shore star Deena Cortese, is the society editor at her family company's title Town & Country.

The couple married in 2007 at a lavish wedding according to Page Six at the time, at the Pierre on Manhattan's Fifth Avenue.

Gillian's great-grandfather was William Randolph Hearst, the newspaper magnate said to have inspired the megalomaniac central character in Citizen Kane.

Happy couple: Gillian, married to lawyer Christian Simonds whose clients include Jersey Shore star Deena Cortese, is the society editor at her family company's title Town & Country

Her mother, Patty, was an apolitical 19-year-old American heiress when she was kidnapped by the Symbionese Liberation Army, a Left-wing guerrilla group, in 1974.

During her captivity, she joined the SLA, denounced her former life, took the name Tania and carried out an armed robbery on a bank in San Francisco with other group members.

She was arrested the following year and during her trial it was claimed that she had developed Stockholm syndrome, the condition in which hostages begin to identify with their captors in order to make sense of what is happening to them.

Patty was imprisoned for almost two years, and was later granted a presidential pardon by President Bill Clinton in his last official act before leaving office.

Lydia's great-grandfather was William Randolph Hearst, the newspaper magnate said to have inspired the megalomaniac central character in Citizen Kane.

Her mother, Patty, was an apolitical 19-year-old American heiress when she was kidnapped by the Symbionese Liberation Army, a Left-wing guerrilla group, in 1974.

During her captivity, she joined the SLA, denounced her former life, took the name Tania and carried out an armed robbery on a bank in San Francisco with other group members.

She was arrested the following year and during her trial it was claimed that she had developed Stockholm syndrome, the condition in which hostages begin to identify with their captors in order to make sense of what is happening to them.

Patty was imprisoned for almost two years, and was later granted a presidential pardon by President Bill Clinton in his last official act before leaving office.

Lydia's great-grandfather was William Randolph Hearst, the newspaper magnate said to have inspired the megalomaniac central character in Citizen Kane.

Her mother, Patty, was an apolitical 19-year-old American heiress when she was kidnapped by the Symbionese Liberation Army, a Left-wing guerrilla group, in 1974.

During her captivity, she joined the SLA, denounced her former life, took the name Tania and carried out an armed robbery on a bank in San Francisco with other group members.

She was arrested the following year and during her trial it was claimed that she had developed Stockholm syndrome, the condition in which hostages begin to identify with their captors in order to make sense of what is happening to them.

Patty was imprisoned for almost two years, and was later granted a presidential pardon by President Bill Clinton in his last official act before leaving office.